Member postings for A Mc

Thanks very much for that well articulated and detailed reply Nigel,

after going away to check some videos on turret alignment, so far all im seeing is that is caters for X and Z axis. correct me in i am wrong here, (hobbyist machinist) the issue I'm having is referring to Y axis (of which there isn't one on this machine) for example,

When making the initial front facing cut, the front face is left with a nib or nipple created by the left hand cutting tool. The diameter of this nib is measuring about 1.64mm.

When parting off I am also getting the nib (I suppose that is to be expected on the rear side of the workpiece) and it measures approx 1.22mm.

maybe the shape of the nib will be of significance? here is a photo from the nib left after facing cut with the left hand tool.

also i checked the shank size for the tooling i have here, its 10mm, i did find a sort of guide on the boxford tcli and it mentions 12mm shank size, but without changing the retaining wedges there is no way i could fit 12mm tooling..

specifications where documented here: https://pdfcoffee.com/160tcli-pc-technical-specification-pdf-free.html

as for the boxford manual, it clearly states 10mm SH for my LHCT and the Parting tool.

regarding the bumping of turret into work piece or chuck, there does appear to be some marking on the front face of the turret as if someone has drilled into a workpiece too far and its made contact. i will continue to investigate the alignment of the turret.

Thanks again

Thanks for the feedback, here is an image of the turret, i cant quite see how this is like a Dickson type QC.

i still cant figure out how the tools are adjusted here, maybe im better off making a wedge to suit the shim i am using?

thanks again.

Hello all, thanks in advance for reading the following..

I have access to a friends boxford 160 tcli cnc lathe with the 8 tool turret, i am hoping someone can offer guidance on adjustment of the tools to suit the centre line of the spindle.

so far it appears the drilling tools are perfectly on centre with the spindle, yet the left hand cutting tool and parting tool were both off centre by varying amounts.

I shimmed the parting tool and now the tool is off centre by about .3mm which is fine for me, however i wanted to get the left hand cutting tool bang on center so as to not leave a nib on the work piece particularly when facing off.

i attempted to shim the left handle cutting tool by .82mm (nib measures about 1.64mm diameter) however when trying to bolt the tool down with the shim, the wedge block that retains the tool wont fit flush with the turret, in fact its protruding so much that the bolts are not long enough to tighten the wedge down to the turret!

I suppose grinding the tool shank down is now in order? does anyone recommend an alternative method so i dont have to take material off the tools?

thanks in advance all!

thanks for all the advice everyone,

sadly im still not in the position to acquire what i need, can anyone recommend a cnc company in the uk that can make these handles for as little ££ as possible?

maybe someone on here could give me a quote?

i don't not have a cad file or dimensions written up but the diameter is about 20mm and about 2 1/2 inches in length off top of my head, the only design aspects is a central groove, a bored out hole in each end with a taper..

thanks in advance

Andy

Thanks Dave,

What you say seems to be the way it's panning out from the research i have done already.. in terms of a chinese or 'far eastern' lathe, is there a particular one to go for or are they all pot luck / hit and miss in terms of longevity, accuracy, overall quality etc?

if i have to start there i will and in time will move on unless i find myself pleasantly surprised?

cheers
A

Looking to replicate something similar to this, central groove and a softened edge on the sides, doesn't have to be bored out but ultimately i would love to get a lathe i can play around with and learn on aswell, its difficult because i dont have the space and im in a terrace house so keeping the noise to a minimum is very important - we used to live directly next door to a lathe workshop and it would make our living room shake, i cant and won't put the neighbours through that

in terms of quantity i need hundreds of them until i can afford to get them cnc made in large quantities

thanks for the advice thus far, im noting all of this down!

A

Hi there,

Need some much needed advice, i am looking for my first lathe,

i do not have a workshop so it needs to be as small as (and quiet if that's possible), i plan on making up a load of handles in bulk made from delrin plastic so the lathe needs to be capable of running constantly without over heating (as i've researched, the emco SL 1000 can only handle about 8 minutes constant use and 2 minutes cooling at a time??)

budget as low as possible but was hoping to buy british not chinese.

ultimately i want something that is going to be a joy to use not a hassle, as one of the chaps here on the forum said "spend more and buy once or spend less and end up buying twice only to spend more anyways".

the handles are 25 mm in diameter and about 3" length, i plan to buy delrin at the diameter i need to reduce time. hope i didn't miss any info from that..

thanks all

A